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a=ed25519; pk=sAZDYXdm6Iz8FHitpHeFlCMXwabodTm7p8/3/8xUxuU= X-Developer-Signature: v=1; a=ed25519-sha256; t=1787735885; l=2380; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=Q/A6Dc0B0gRna9abP7QnB2WrkUxTYkjcUX3FbTtwMJI=; b=2YkTIc1SmD00N2MMdJmLmjlME4gtBWUYhIUyh7O71YGRuPDt2J8tpdmJsRGiLloiJb86kHa1e IiS094M8sscCQIJsw6CDHW3d9k4k2B+zvtFayWaStH6wkSP2zGMskI9 X-Mailer: b4 0.16.0 Message-ID: <20260826-gmem-inplace-conversion-v11-28-0a15d8a799aa@google.com> Subject: [PATCH v11 28/46] KVM: selftests: Add selftests global for guest memory attributes capability From: Ackerley Tng To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com, brauner@kernel.org, chao.p.peng@linux.intel.com, david@kernel.org, jmattson@google.com, jthoughton@google.com, michael.roth@amd.com, oupton@kernel.org, pankaj.gupta@amd.com, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, shivankg@amd.com, steven.price@arm.com, willy@infradead.org, wyihan@google.com, yan.y.zhao@intel.com, forkloop@google.com, pratyush@kernel.org, suzuki.poulose@arm.com, aneesh.kumar@kernel.org, liam@infradead.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Baoquan He , Jason Gunthorpe , John Hubbard , Peter Xu , tarunsahu@google.com, Fuad Tabba , Vlastimil Babka Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, Ackerley Tng Content-Type: text/plain; charset="utf-8" X-Stat-Signature: 6by6zjmqu6u36miu3mna141tfgwgypgz X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: CD82F120006 X-Rspam-User: X-HE-Tag: 1787735936-785826 X-HE-Meta: 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 EgMZIzRu 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Sean Christopherson Add a global variable, kvm_has_gmem_attributes, to make the result of checking for KVM_CAP_GUEST_MEMFD_MEMORY_ATTRIBUTES available to all tests. kvm_has_gmem_attributes is true if guest_memfd tracks memory attributes, as opposed to VM-level tracking. This global variable is synced to the guest for testing convenience, to avoid introducing subtle bugs when host/guest state is desynced. Signed-off-by: Sean Christopherson Reviewed-by: Fuad Tabba Tested-by: Shivank Garg Signed-off-by: Ackerley Tng --- tools/testing/selftests/kvm/include/test_util.h | 2 ++ tools/testing/selftests/kvm/lib/kvm_util.c | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h index a6a3e16578959..d5825211f2727 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -116,6 +116,8 @@ struct kvm_random_state { extern u32 kvm_random_seed; extern struct kvm_random_state kvm_rng; +extern bool kvm_has_gmem_attributes; + struct kvm_random_state new_kvm_random_state(u32 seed); u32 kvm_random_u32(struct kvm_random_state *state); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 08d0bbcd421ea..cd468b2bb8343 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -32,6 +32,8 @@ static void kvm_seed_rng(u32 seed) kvm_rng = new_kvm_random_state(kvm_random_seed); } +bool kvm_has_gmem_attributes; + static size_t vcpu_mmap_sz(void); int __open_path_or_exit(const char *path, int flags, const char *enoent_help) @@ -527,6 +529,7 @@ struct kvm_vm *__vm_create(struct vm_shape shape, u32 nr_runnable_vcpus, kvm_seed_rng(kvm_random_seed); sync_global_to_guest(vm, kvm_rng); + sync_global_to_guest(vm, kvm_has_gmem_attributes); kvm_arch_vm_post_create(vm, nr_runnable_vcpus); @@ -2311,6 +2314,8 @@ void __attribute((constructor)) kvm_selftest_init(void) srandom(time(0)); kvm_seed_rng(random()); + kvm_has_gmem_attributes = kvm_has_cap(KVM_CAP_GUEST_MEMFD_MEMORY_ATTRIBUTES); + kvm_selftest_arch_init(); } -- 2.55.0.887.g758fc8c411-goog